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数据选择横向比较选取不同时期19条110千伏电缆线路工程可研估算数据作为分析样本进行分析,按不同截面、不同回路数项目可分为七大类(见表)。所选取的样本中,除3×1000平方毫米、2×800平方毫米两个类别为单一样本外,其余各线路在同截面同回路数情况下具有高度可比性。纵向比较选取110千伏中轴可研估算、初设概算、施工图预算数据进行项目全过程造价比较分析。数据分析横向比较
Data comparison Horizontal comparison Select the feasibility study data of 19 110kV cable lines in different periods as the analysis sample. According to the different sections, the number of different loops can be divided into seven categories (see table). The selected samples, in addition to 3 × 1000 mm2, 2 × 800 mm2 two categories as a single sample, the other lines in the same section with the same number of cases with a high degree of comparability. Longitudinal comparison selected 110 kV central axis of the feasibility study, the initial estimates, construction plans budget data for the project the whole process of comparative analysis. Data Analysis Horizontal Comparison